Within the SA the color light-blue/black was in use with the Rhein-district in 1926.
In 1929 the blue color changed into a darker blue tone. In fall 1932 the colors blue/black were in use at the SA-groups of Koblenz-Trier and also at Köln-Achen.
These colors are stated in various orders from the SA High-Command (OSAF).
May 1, 1931 the HJ was assigned to the Oberste SA-Führung (order II a/HJ Nr. 1834/31 - entprechend der Gliederung der SA) and it would have been proper
the colors mentioned above were also in use by the HJ. Koblenz-Trier was assigned to the HJ-group of West; Köln-Aachen was assigned to the HJ-group of Nordwest.
When the HJ was re-organized in 1933 Bann 29 was from the HJ-district Koblenz-Trier, which in fall 1933 was known as Westmark. The headquarters were
at Bitburg.
Nice shoulder-strap with proper lighter blue embroidery for group West (group north-west - Köln-Aachen - had black embroidery). That's how I thought it was!